1 /* 2 * Copyright (c) 1999, 2022, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.tools.javac.code; 27 28 import java.util.Collection; 29 import java.util.Collections; 30 import java.util.EnumSet; 31 import java.util.HashMap; 32 import java.util.LinkedHashMap; 33 import java.util.Map; 34 35 import javax.lang.model.element.ElementVisitor; 36 37 import com.sun.tools.javac.code.Scope.WriteableScope; 38 import com.sun.tools.javac.code.Source.Feature; 39 import com.sun.tools.javac.code.Symbol.ClassSymbol; 40 import com.sun.tools.javac.code.Symbol.Completer; 41 import com.sun.tools.javac.code.Symbol.CompletionFailure; 42 import com.sun.tools.javac.code.Symbol.MethodSymbol; 43 import com.sun.tools.javac.code.Symbol.ModuleSymbol; 44 import com.sun.tools.javac.code.Symbol.PackageSymbol; 45 import com.sun.tools.javac.code.Symbol.RootPackageSymbol; 46 import com.sun.tools.javac.code.Symbol.TypeSymbol; 47 import com.sun.tools.javac.code.Symbol.VarSymbol; 48 import com.sun.tools.javac.code.Type.BottomType; 49 import com.sun.tools.javac.code.Type.ClassType; 50 import com.sun.tools.javac.code.Type.ErrorType; 51 import com.sun.tools.javac.code.Type.JCPrimitiveType; 52 import com.sun.tools.javac.code.Type.JCVoidType; 53 import com.sun.tools.javac.code.Type.MethodType; 54 import com.sun.tools.javac.code.Type.UnknownType; 55 import com.sun.tools.javac.code.Type.WildcardType; 56 import com.sun.tools.javac.code.Types.UniqueType; 57 import com.sun.tools.javac.comp.Modules; 58 import com.sun.tools.javac.jvm.Target; 59 import com.sun.tools.javac.util.Assert; 60 import com.sun.tools.javac.util.Context; 61 import com.sun.tools.javac.util.Convert; 62 import com.sun.tools.javac.util.DefinedBy; 63 import com.sun.tools.javac.util.DefinedBy.Api; 64 import com.sun.tools.javac.util.Iterators; 65 import com.sun.tools.javac.util.JavacMessages; 66 import com.sun.tools.javac.util.List; 67 import com.sun.tools.javac.util.Name; 68 import com.sun.tools.javac.util.Names; 69 import com.sun.tools.javac.util.Options; 70 71 import static com.sun.tools.javac.code.Flags.*; 72 import static com.sun.tools.javac.code.Kinds.Kind.*; 73 import static com.sun.tools.javac.code.TypeTag.*; 74 75 /** A class that defines all predefined constants and operators 76 * as well as special classes such as java.lang.Object, which need 77 * to be known to the compiler. All symbols are held in instance 78 * fields. This makes it possible to work in multiple concurrent 79 * projects, which might use different class files for library classes. 80 * 81 * <p><b>This is NOT part of any supported API. 82 * If you write code that depends on this, you do so at your own risk. 83 * This code and its internal interfaces are subject to change or 84 * deletion without notice.</b> 85 */ 86 public class Symtab { 87 /** The context key for the symbol table. */ 88 protected static final Context.Key<Symtab> symtabKey = new Context.Key<>(); 89 90 /** Get the symbol table instance. */ 91 public static Symtab instance(Context context) { 92 Symtab instance = context.get(symtabKey); 93 if (instance == null) 94 instance = new Symtab(context); 95 return instance; 96 } 97 98 private final boolean allowPrimitiveClasses; 99 100 /** Builtin types. 101 */ 102 public final JCPrimitiveType byteType = new JCPrimitiveType(BYTE, null); 103 public final JCPrimitiveType charType = new JCPrimitiveType(CHAR, null); 104 public final JCPrimitiveType shortType = new JCPrimitiveType(SHORT, null); 105 public final JCPrimitiveType intType = new JCPrimitiveType(INT, null); 106 public final JCPrimitiveType longType = new JCPrimitiveType(LONG, null); 107 public final JCPrimitiveType floatType = new JCPrimitiveType(FLOAT, null); 108 public final JCPrimitiveType doubleType = new JCPrimitiveType(DOUBLE, null); 109 public final JCPrimitiveType booleanType = new JCPrimitiveType(BOOLEAN, null); 110 public final Type botType = new BottomType(); 111 public final JCVoidType voidType = new JCVoidType(); 112 113 private final Names names; 114 private final JavacMessages messages; 115 private final Completer initialCompleter; 116 private final Completer moduleCompleter; 117 118 /** A symbol for the unnamed module. 119 */ 120 public final ModuleSymbol unnamedModule; 121 122 /** The error module. 123 */ 124 public final ModuleSymbol errModule; 125 126 /** A symbol for no module, for use with -source 8 or less 127 */ 128 public final ModuleSymbol noModule; 129 130 /** A symbol for the root package. 131 */ 132 public final PackageSymbol rootPackage; 133 134 /** A symbol that stands for a missing symbol. 135 */ 136 public final TypeSymbol noSymbol; 137 138 /** The error symbol. 139 */ 140 public final ClassSymbol errSymbol; 141 142 /** The unknown symbol. 143 */ 144 public final ClassSymbol unknownSymbol; 145 146 /** A value for the errType, with a originalType of noType */ 147 public final Type errType; 148 149 /** A value for the unknown type. */ 150 public final Type unknownType; 151 152 /** The builtin type of all arrays. */ 153 public final ClassSymbol arrayClass; 154 public final MethodSymbol arrayCloneMethod; 155 156 /** VGJ: The (singleton) type of all bound types. */ 157 public final ClassSymbol boundClass; 158 159 /** The builtin type of all methods. */ 160 public final ClassSymbol methodClass; 161 162 /** A symbol for the java.base module. 163 */ 164 public final ModuleSymbol java_base; 165 166 /** Predefined types. 167 */ 168 public final Type objectType; 169 public final Type objectMethodsType; 170 public final Type objectsType; 171 public final Type classType; 172 public final Type classLoaderType; 173 public final Type stringType; 174 public final Type stringBufferType; 175 public final Type stringBuilderType; 176 public final Type cloneableType; 177 public final Type serializableType; 178 public final Type serializedLambdaType; 179 public final Type varHandleType; 180 public final Type methodHandleType; 181 public final Type methodHandleLookupType; 182 public final Type methodTypeType; 183 public final Type nativeHeaderType; 184 public final Type throwableType; 185 public final Type errorType; 186 public final Type interruptedExceptionType; 187 public final Type illegalArgumentExceptionType; 188 public final Type exceptionType; 189 public final Type runtimeExceptionType; 190 public final Type classNotFoundExceptionType; 191 public final Type noClassDefFoundErrorType; 192 public final Type noSuchFieldErrorType; 193 public final Type assertionErrorType; 194 public final Type incompatibleClassChangeErrorType; 195 public final Type cloneNotSupportedExceptionType; 196 public final Type matchExceptionType; 197 public final Type nullPointerExceptionType; 198 public final Type annotationType; 199 public final TypeSymbol enumSym; 200 public final Type listType; 201 public final Type collectionsType; 202 public final Type comparableType; 203 public final Type comparatorType; 204 public final Type arraysType; 205 public final Type iterableType; 206 public final Type iteratorType; 207 public final Type annotationTargetType; 208 public final Type overrideType; 209 public final Type retentionType; 210 public final Type deprecatedType; 211 public final Type suppressWarningsType; 212 public final Type supplierType; 213 public final Type inheritedType; 214 public final Type profileType; 215 public final Type proprietaryType; 216 public final Type systemType; 217 public final Type autoCloseableType; 218 public final Type trustMeType; 219 public final Type lambdaMetafactory; 220 public final Type stringConcatFactory; 221 public final Type repeatableType; 222 public final Type documentedType; 223 public final Type elementTypeType; 224 public final Type functionalInterfaceType; 225 public final Type previewFeatureType; 226 public final Type previewFeatureInternalType; 227 public final Type typeDescriptorType; 228 public final Type recordType; 229 public final Type switchBootstrapsType; 230 public final Type valueBasedType; 231 public final Type valueBasedInternalType; 232 233 // For serialization lint checking 234 public final Type objectStreamFieldType; 235 public final Type objectInputStreamType; 236 public final Type objectOutputStreamType; 237 public final Type ioExceptionType; 238 public final Type objectStreamExceptionType; 239 public final Type externalizableType; 240 241 /** The symbol representing the length field of an array. 242 */ 243 public final VarSymbol lengthVar; 244 245 /** The symbol representing the final finalize method on enums */ 246 public final MethodSymbol enumFinalFinalize; 247 248 /** The symbol representing the close method on TWR AutoCloseable type */ 249 public final MethodSymbol autoCloseableClose; 250 251 /** The predefined type that belongs to a tag. 252 */ 253 public final Type[] typeOfTag = new Type[TypeTag.getTypeTagCount()]; 254 255 /** The name of the class that belongs to a basic type tag. 256 */ 257 public final Name[] boxedName = new Name[TypeTag.getTypeTagCount()]; 258 259 /** A hashtable containing the encountered top-level and member classes, 260 * indexed by flat names. The table does not contain local classes. 261 * It should be updated from the outside to reflect classes defined 262 * by compiled source files. 263 */ 264 private final Map<Name, Map<ModuleSymbol,ClassSymbol>> classes = new HashMap<>(); 265 266 /** A hashtable containing the encountered packages. 267 * the table should be updated from outside to reflect packages defined 268 * by compiled source files. 269 */ 270 private final Map<Name, Map<ModuleSymbol,PackageSymbol>> packages = new HashMap<>(); 271 272 /** A hashtable giving the encountered modules. 273 */ 274 private final Map<Name, ModuleSymbol> modules = new LinkedHashMap<>(); 275 276 private final Map<Types.UniqueType, VarSymbol> classFields = new HashMap<>(); 277 278 public VarSymbol getClassField(Type type, Types types) { 279 return classFields.computeIfAbsent( 280 new UniqueType(type, types), k -> { 281 Type arg = null; 282 if (type.getTag() == ARRAY || type.getTag() == CLASS) { 283 /* Temporary treatment for primitive class: Given a primitive class V that implements 284 I1, I2, ... In, V.class is typed to be Class<? extends Object & I1 & I2 .. & In> 285 */ 286 if (allowPrimitiveClasses && type.isPrimitiveClass()) { 287 List<Type> bounds = List.of(objectType).appendList(((ClassSymbol) type.tsym).getInterfaces()); 288 arg = new WildcardType(bounds.size() > 1 ? types.makeIntersectionType(bounds) : objectType, BoundKind.EXTENDS, boundClass); 289 } else { 290 arg = types.erasure(type); 291 } 292 } 293 else if (type.isPrimitiveOrVoid()) 294 arg = types.boxedClass(type).type; 295 else 296 throw new AssertionError(type); 297 298 Type t = new ClassType( 299 classType.getEnclosingType(), List.of(arg), classType.tsym); 300 return new VarSymbol( 301 STATIC | PUBLIC | FINAL, names._class, t, type.tsym); 302 }); 303 } 304 305 public void initType(Type type, ClassSymbol c) { 306 type.tsym = c; 307 typeOfTag[type.getTag().ordinal()] = type; 308 } 309 310 public void initType(Type type, String name) { 311 initType( 312 type, 313 new ClassSymbol( 314 PUBLIC, names.fromString(name), type, rootPackage)); 315 } 316 317 public void initType(Type type, String name, String bname) { 318 initType(type, name); 319 boxedName[type.getTag().ordinal()] = names.fromString("java.lang." + bname); 320 } 321 322 /** The class symbol that owns all predefined symbols. 323 */ 324 public final ClassSymbol predefClass; 325 326 /** Enter a class into symbol table. 327 * @param s The name of the class. 328 */ 329 private Type enterClass(String s) { 330 return enterClass(java_base, names.fromString(s)).type; 331 } 332 333 public void synthesizeEmptyInterfaceIfMissing(final Type type) { 334 final Completer completer = type.tsym.completer; 335 type.tsym.completer = new Completer() { 336 @Override 337 public void complete(Symbol sym) throws CompletionFailure { 338 try { 339 completer.complete(sym); 340 } catch (CompletionFailure e) { 341 sym.flags_field |= (PUBLIC | INTERFACE); 342 ((ClassType) sym.type).supertype_field = objectType; 343 } 344 } 345 346 @Override 347 public boolean isTerminal() { 348 return completer.isTerminal(); 349 } 350 }; 351 } 352 353 public void synthesizeBoxTypeIfMissing(final Type type) { 354 ClassSymbol sym = enterClass(java_base, boxedName[type.getTag().ordinal()]); 355 final Completer completer = sym.completer; 356 sym.completer = new Completer() { 357 @Override 358 public void complete(Symbol sym) throws CompletionFailure { 359 try { 360 completer.complete(sym); 361 } catch (CompletionFailure e) { 362 sym.flags_field |= PUBLIC; 363 ((ClassType) sym.type).supertype_field = objectType; 364 MethodSymbol boxMethod = 365 new MethodSymbol(PUBLIC | STATIC, names.valueOf, 366 new MethodType(List.of(type), sym.type, 367 List.nil(), methodClass), 368 sym); 369 sym.members().enter(boxMethod); 370 MethodSymbol unboxMethod = 371 new MethodSymbol(PUBLIC, 372 type.tsym.name.append(names.Value), // x.intValue() 373 new MethodType(List.nil(), type, 374 List.nil(), methodClass), 375 sym); 376 sym.members().enter(unboxMethod); 377 } 378 } 379 380 @Override 381 public boolean isTerminal() { 382 return completer.isTerminal(); 383 } 384 }; 385 } 386 387 // Enter a synthetic class that is used to mark classes in ct.sym. 388 // This class does not have a class file. 389 private Type enterSyntheticAnnotation(String name) { 390 // for now, leave the module null, to prevent problems from synthesizing the 391 // existence of a class in any specific module, including noModule 392 ClassType type = (ClassType)enterClass(java_base, names.fromString(name)).type; 393 ClassSymbol sym = (ClassSymbol)type.tsym; 394 sym.completer = Completer.NULL_COMPLETER; 395 sym.flags_field = PUBLIC|ACYCLIC|ANNOTATION|INTERFACE; 396 sym.erasure_field = type; 397 sym.members_field = WriteableScope.create(sym); 398 type.typarams_field = List.nil(); 399 type.allparams_field = List.nil(); 400 type.supertype_field = annotationType; 401 type.interfaces_field = List.nil(); 402 return type; 403 } 404 405 /** Constructor; enters all predefined identifiers and operators 406 * into symbol table. 407 */ 408 protected Symtab(Context context) throws CompletionFailure { 409 context.put(symtabKey, this); 410 411 names = Names.instance(context); 412 413 // Create the unknown type 414 unknownType = new UnknownType(); 415 416 messages = JavacMessages.instance(context); 417 418 MissingInfoHandler missingInfoHandler = MissingInfoHandler.instance(context); 419 420 Target target = Target.instance(context); 421 rootPackage = new RootPackageSymbol(names.empty, null, 422 missingInfoHandler, 423 target.runtimeUseNestAccess()); 424 425 // create the basic builtin symbols 426 unnamedModule = new ModuleSymbol(names.empty, null) { 427 { 428 directives = List.nil(); 429 exports = List.nil(); 430 provides = List.nil(); 431 uses = List.nil(); 432 ModuleSymbol java_base = enterModule(names.java_base); 433 com.sun.tools.javac.code.Directive.RequiresDirective d = 434 new com.sun.tools.javac.code.Directive.RequiresDirective(java_base, 435 EnumSet.of(com.sun.tools.javac.code.Directive.RequiresFlag.MANDATED)); 436 requires = List.of(d); 437 } 438 @Override 439 public String toString() { 440 return messages.getLocalizedString("compiler.misc.unnamed.module"); 441 } 442 }; 443 addRootPackageFor(unnamedModule); 444 unnamedModule.enclosedPackages = unnamedModule.enclosedPackages.prepend(unnamedModule.unnamedPackage); 445 446 errModule = new ModuleSymbol(names.empty, null) { 447 { 448 directives = List.nil(); 449 exports = List.nil(); 450 provides = List.nil(); 451 uses = List.nil(); 452 ModuleSymbol java_base = enterModule(names.java_base); 453 com.sun.tools.javac.code.Directive.RequiresDirective d = 454 new com.sun.tools.javac.code.Directive.RequiresDirective(java_base, 455 EnumSet.of(com.sun.tools.javac.code.Directive.RequiresFlag.MANDATED)); 456 requires = List.of(d); 457 } 458 }; 459 addRootPackageFor(errModule); 460 461 noModule = new ModuleSymbol(names.empty, null) { 462 @Override public boolean isNoModule() { 463 return true; 464 } 465 }; 466 addRootPackageFor(noModule); 467 468 noSymbol = new TypeSymbol(NIL, 0, names.empty, Type.noType, rootPackage) { 469 @Override @DefinedBy(Api.LANGUAGE_MODEL) 470 public <R, P> R accept(ElementVisitor<R, P> v, P p) { 471 return v.visitUnknown(this, p); 472 } 473 }; 474 475 // create the error symbols 476 errSymbol = new ClassSymbol(PUBLIC|STATIC|ACYCLIC, names.any, null, rootPackage); 477 errType = new ErrorType(errSymbol, Type.noType); 478 479 unknownSymbol = new ClassSymbol(PUBLIC|STATIC|ACYCLIC, names.fromString("<any?>"), null, rootPackage); 480 unknownSymbol.members_field = new Scope.ErrorScope(unknownSymbol); 481 unknownSymbol.type = unknownType; 482 483 // initialize builtin types 484 initType(byteType, "byte", "Byte"); 485 initType(shortType, "short", "Short"); 486 initType(charType, "char", "Character"); 487 initType(intType, "int", "Integer"); 488 initType(longType, "long", "Long"); 489 initType(floatType, "float", "Float"); 490 initType(doubleType, "double", "Double"); 491 initType(booleanType, "boolean", "Boolean"); 492 initType(voidType, "void", "Void"); 493 initType(botType, "<nulltype>"); 494 initType(errType, errSymbol); 495 initType(unknownType, unknownSymbol); 496 497 // the builtin class of all arrays 498 arrayClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Array, noSymbol); 499 500 // VGJ 501 boundClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Bound, noSymbol); 502 boundClass.members_field = new Scope.ErrorScope(boundClass); 503 504 // the builtin class of all methods 505 methodClass = new ClassSymbol(PUBLIC|ACYCLIC, names.Method, noSymbol); 506 methodClass.members_field = new Scope.ErrorScope(boundClass); 507 508 // Create class to hold all predefined constants and operations. 509 predefClass = new ClassSymbol(PUBLIC|ACYCLIC, names.empty, rootPackage); 510 WriteableScope scope = WriteableScope.create(predefClass); 511 predefClass.members_field = scope; 512 513 // Get the initial completer for Symbols from the ClassFinder 514 initialCompleter = ClassFinder.instance(context).getCompleter(); 515 rootPackage.members_field = WriteableScope.create(rootPackage); 516 517 // Enter symbols for basic types. 518 scope.enter(byteType.tsym); 519 scope.enter(shortType.tsym); 520 scope.enter(charType.tsym); 521 scope.enter(intType.tsym); 522 scope.enter(longType.tsym); 523 scope.enter(floatType.tsym); 524 scope.enter(doubleType.tsym); 525 scope.enter(booleanType.tsym); 526 scope.enter(errType.tsym); 527 528 // Enter symbol for the errSymbol 529 scope.enter(errSymbol); 530 531 Source source = Source.instance(context); 532 if (Feature.MODULES.allowedInSource(source)) { 533 java_base = enterModule(names.java_base); 534 //avoid completing java.base during the Symtab initialization 535 java_base.completer = Completer.NULL_COMPLETER; 536 java_base.visiblePackages = Collections.emptyMap(); 537 } else { 538 java_base = noModule; 539 } 540 541 // Get the initial completer for ModuleSymbols from Modules 542 moduleCompleter = Modules.instance(context).getCompleter(); 543 544 // Enter predefined classes. All are assumed to be in the java.base module. 545 objectType = enterClass("java.lang.Object"); 546 objectMethodsType = enterClass("java.lang.runtime.ObjectMethods"); 547 objectsType = enterClass("java.util.Objects"); 548 classType = enterClass("java.lang.Class"); 549 stringType = enterClass("java.lang.String"); 550 stringBufferType = enterClass("java.lang.StringBuffer"); 551 stringBuilderType = enterClass("java.lang.StringBuilder"); 552 cloneableType = enterClass("java.lang.Cloneable"); 553 throwableType = enterClass("java.lang.Throwable"); 554 serializableType = enterClass("java.io.Serializable"); 555 serializedLambdaType = enterClass("java.lang.invoke.SerializedLambda"); 556 varHandleType = enterClass("java.lang.invoke.VarHandle"); 557 methodHandleType = enterClass("java.lang.invoke.MethodHandle"); 558 methodHandleLookupType = enterClass("java.lang.invoke.MethodHandles$Lookup"); 559 methodTypeType = enterClass("java.lang.invoke.MethodType"); 560 errorType = enterClass("java.lang.Error"); 561 illegalArgumentExceptionType = enterClass("java.lang.IllegalArgumentException"); 562 interruptedExceptionType = enterClass("java.lang.InterruptedException"); 563 exceptionType = enterClass("java.lang.Exception"); 564 runtimeExceptionType = enterClass("java.lang.RuntimeException"); 565 classNotFoundExceptionType = enterClass("java.lang.ClassNotFoundException"); 566 noClassDefFoundErrorType = enterClass("java.lang.NoClassDefFoundError"); 567 noSuchFieldErrorType = enterClass("java.lang.NoSuchFieldError"); 568 assertionErrorType = enterClass("java.lang.AssertionError"); 569 incompatibleClassChangeErrorType = enterClass("java.lang.IncompatibleClassChangeError"); 570 cloneNotSupportedExceptionType = enterClass("java.lang.CloneNotSupportedException"); 571 matchExceptionType = enterClass("java.lang.MatchException"); 572 nullPointerExceptionType = enterClass("java.lang.NullPointerException"); 573 annotationType = enterClass("java.lang.annotation.Annotation"); 574 classLoaderType = enterClass("java.lang.ClassLoader"); 575 enumSym = enterClass(java_base, names.java_lang_Enum); 576 enumFinalFinalize = 577 new MethodSymbol(PROTECTED|FINAL|HYPOTHETICAL, 578 names.finalize, 579 new MethodType(List.nil(), voidType, 580 List.nil(), methodClass), 581 enumSym); 582 listType = enterClass("java.util.List"); 583 collectionsType = enterClass("java.util.Collections"); 584 comparableType = enterClass("java.lang.Comparable"); 585 comparatorType = enterClass("java.util.Comparator"); 586 arraysType = enterClass("java.util.Arrays"); 587 iterableType = enterClass("java.lang.Iterable"); 588 iteratorType = enterClass("java.util.Iterator"); 589 annotationTargetType = enterClass("java.lang.annotation.Target"); 590 overrideType = enterClass("java.lang.Override"); 591 retentionType = enterClass("java.lang.annotation.Retention"); 592 deprecatedType = enterClass("java.lang.Deprecated"); 593 suppressWarningsType = enterClass("java.lang.SuppressWarnings"); 594 supplierType = enterClass("java.util.function.Supplier"); 595 inheritedType = enterClass("java.lang.annotation.Inherited"); 596 repeatableType = enterClass("java.lang.annotation.Repeatable"); 597 documentedType = enterClass("java.lang.annotation.Documented"); 598 elementTypeType = enterClass("java.lang.annotation.ElementType"); 599 systemType = enterClass("java.lang.System"); 600 autoCloseableType = enterClass("java.lang.AutoCloseable"); 601 autoCloseableClose = new MethodSymbol(PUBLIC, 602 names.close, 603 new MethodType(List.nil(), voidType, 604 List.of(exceptionType), methodClass), 605 autoCloseableType.tsym); 606 trustMeType = enterClass("java.lang.SafeVarargs"); 607 nativeHeaderType = enterClass("java.lang.annotation.Native"); 608 lambdaMetafactory = enterClass("java.lang.invoke.LambdaMetafactory"); 609 stringConcatFactory = enterClass("java.lang.invoke.StringConcatFactory"); 610 functionalInterfaceType = enterClass("java.lang.FunctionalInterface"); 611 previewFeatureType = enterClass("jdk.internal.javac.PreviewFeature"); 612 previewFeatureInternalType = enterSyntheticAnnotation("jdk.internal.PreviewFeature+Annotation"); 613 typeDescriptorType = enterClass("java.lang.invoke.TypeDescriptor"); 614 recordType = enterClass("java.lang.Record"); 615 switchBootstrapsType = enterClass("java.lang.runtime.SwitchBootstraps"); 616 valueBasedType = enterClass("jdk.internal.ValueBased"); 617 valueBasedInternalType = enterSyntheticAnnotation("jdk.internal.ValueBased+Annotation"); 618 // For serialization lint checking 619 objectStreamFieldType = enterClass("java.io.ObjectStreamField"); 620 objectInputStreamType = enterClass("java.io.ObjectInputStream"); 621 objectOutputStreamType = enterClass("java.io.ObjectOutputStream"); 622 ioExceptionType = enterClass("java.io.IOException"); 623 objectStreamExceptionType = enterClass("java.io.ObjectStreamException"); 624 externalizableType = enterClass("java.io.Externalizable"); 625 626 synthesizeEmptyInterfaceIfMissing(autoCloseableType); 627 synthesizeEmptyInterfaceIfMissing(cloneableType); 628 synthesizeEmptyInterfaceIfMissing(serializableType); 629 synthesizeEmptyInterfaceIfMissing(lambdaMetafactory); 630 synthesizeEmptyInterfaceIfMissing(serializedLambdaType); 631 synthesizeEmptyInterfaceIfMissing(stringConcatFactory); 632 synthesizeBoxTypeIfMissing(doubleType); 633 synthesizeBoxTypeIfMissing(floatType); 634 synthesizeBoxTypeIfMissing(voidType); 635 636 // Enter a synthetic class that is used to mark internal 637 // proprietary classes in ct.sym. This class does not have a 638 // class file. 639 proprietaryType = enterSyntheticAnnotation("sun.Proprietary+Annotation"); 640 641 // Enter a synthetic class that is used to provide profile info for 642 // classes in ct.sym. This class does not have a class file. 643 profileType = enterSyntheticAnnotation("jdk.Profile+Annotation"); 644 MethodSymbol m = new MethodSymbol(PUBLIC | ABSTRACT, names.value, intType, profileType.tsym); 645 profileType.tsym.members().enter(m); 646 647 // Enter a class for arrays. 648 // The class implements java.lang.Cloneable and java.io.Serializable. 649 // It has a final length field and a clone method. 650 ClassType arrayClassType = (ClassType)arrayClass.type; 651 arrayClassType.supertype_field = objectType; 652 arrayClassType.interfaces_field = List.of(cloneableType, serializableType); 653 arrayClass.members_field = WriteableScope.create(arrayClass); 654 lengthVar = new VarSymbol( 655 PUBLIC | FINAL, 656 names.length, 657 intType, 658 arrayClass); 659 arrayClass.members().enter(lengthVar); 660 arrayCloneMethod = new MethodSymbol( 661 PUBLIC, 662 names.clone, 663 new MethodType(List.nil(), objectType, 664 List.nil(), methodClass), 665 arrayClass); 666 arrayClass.members().enter(arrayCloneMethod); 667 668 if (java_base != noModule) 669 java_base.completer = moduleCompleter::complete; //bootstrap issues 670 Options options = Options.instance(context); 671 allowPrimitiveClasses = Feature.PRIMITIVE_CLASSES.allowedInSource(source) && options.isSet("enablePrimitiveClasses"); 672 } 673 674 /** Define a new class given its name and owner. 675 */ 676 public ClassSymbol defineClass(Name name, Symbol owner) { 677 ClassSymbol c = new ClassSymbol(0, name, owner); 678 c.completer = initialCompleter; 679 return c; 680 } 681 682 /** Create a new toplevel or member class symbol with given name 683 * and owner and enter in `classes' unless already there. 684 */ 685 public ClassSymbol enterClass(ModuleSymbol msym, Name name, TypeSymbol owner) { 686 Assert.checkNonNull(msym); 687 Name flatname = TypeSymbol.formFlatName(name, owner); 688 ClassSymbol c = getClass(msym, flatname); 689 if (c == null) { 690 c = defineClass(name, owner); 691 doEnterClass(msym, c); 692 } else if ((c.name != name || c.owner != owner) && owner.kind == TYP && 693 c.owner.kind == PCK && ((c.flags_field & FROM_SOURCE) == 0)) { 694 // reassign fields of classes that might have been loaded with 695 // their flat names. 696 c.owner.members().remove(c); 697 c.name = name; 698 c.owner = owner; 699 c.fullname = ClassSymbol.formFullName(name, owner); 700 } 701 return c; 702 } 703 704 public ClassSymbol getClass(ModuleSymbol msym, Name flatName) { 705 Assert.checkNonNull(msym, flatName::toString); 706 return classes.getOrDefault(flatName, Collections.emptyMap()).get(msym); 707 } 708 709 public PackageSymbol lookupPackage(ModuleSymbol msym, Name flatName) { 710 return lookupPackage(msym, flatName, false); 711 } 712 713 private PackageSymbol lookupPackage(ModuleSymbol msym, Name flatName, boolean onlyExisting) { 714 Assert.checkNonNull(msym); 715 716 if (flatName.isEmpty()) { 717 //unnamed packages only from the current module - visiblePackages contains *root* package, not unnamed package! 718 return msym.unnamedPackage; 719 } 720 721 if (msym == noModule) { 722 return enterPackage(msym, flatName); 723 } 724 725 msym.complete(); 726 727 PackageSymbol pack; 728 729 pack = msym.visiblePackages.get(flatName); 730 731 if (pack != null) 732 return pack; 733 734 pack = getPackage(msym, flatName); 735 736 if ((pack != null && pack.exists()) || onlyExisting) 737 return pack; 738 739 boolean dependsOnUnnamed = msym.requires != null && 740 msym.requires.stream() 741 .map(rd -> rd.module) 742 .anyMatch(mod -> mod == unnamedModule); 743 744 if (dependsOnUnnamed) { 745 //msyms depends on the unnamed module, for which we generally don't know 746 //the list of packages it "exports" ahead of time. So try to lookup the package in the 747 //current module, and in the unnamed module and see if it exists in one of them 748 PackageSymbol unnamedPack = getPackage(unnamedModule, flatName); 749 750 if (unnamedPack != null && unnamedPack.exists()) { 751 msym.visiblePackages.put(unnamedPack.fullname, unnamedPack); 752 return unnamedPack; 753 } 754 755 pack = enterPackage(msym, flatName); 756 pack.complete(); 757 if (pack.exists()) 758 return pack; 759 760 unnamedPack = enterPackage(unnamedModule, flatName); 761 unnamedPack.complete(); 762 if (unnamedPack.exists()) { 763 msym.visiblePackages.put(unnamedPack.fullname, unnamedPack); 764 return unnamedPack; 765 } 766 767 return pack; 768 } 769 770 return enterPackage(msym, flatName); 771 } 772 773 private static final Map<ModuleSymbol, ClassSymbol> EMPTY = new HashMap<>(); 774 775 public void removeClass(ModuleSymbol msym, Name flatName) { 776 classes.getOrDefault(flatName, EMPTY).remove(msym); 777 } 778 779 public Iterable<ClassSymbol> getAllClasses() { 780 return () -> Iterators.createCompoundIterator(classes.values(), v -> v.values().iterator()); 781 } 782 783 private void doEnterClass(ModuleSymbol msym, ClassSymbol cs) { 784 classes.computeIfAbsent(cs.flatname, n -> new HashMap<>()).put(msym, cs); 785 } 786 787 /** Create a new member or toplevel class symbol with given flat name 788 * and enter in `classes' unless already there. 789 */ 790 public ClassSymbol enterClass(ModuleSymbol msym, Name flatname) { 791 Assert.checkNonNull(msym); 792 PackageSymbol ps = lookupPackage(msym, Convert.packagePart(flatname)); 793 Assert.checkNonNull(ps); 794 Assert.checkNonNull(ps.modle); 795 ClassSymbol c = getClass(ps.modle, flatname); 796 if (c == null) { 797 c = defineClass(Convert.shortName(flatname), ps); 798 doEnterClass(ps.modle, c); 799 return c; 800 } else 801 return c; 802 } 803 804 /** Check to see if a package exists, given its fully qualified name. 805 */ 806 public boolean packageExists(ModuleSymbol msym, Name fullname) { 807 Assert.checkNonNull(msym); 808 PackageSymbol pack = lookupPackage(msym, fullname, true); 809 return pack != null && pack.exists(); 810 } 811 812 /** Make a package, given its fully qualified name. 813 */ 814 public PackageSymbol enterPackage(ModuleSymbol currModule, Name fullname) { 815 Assert.checkNonNull(currModule); 816 PackageSymbol p = getPackage(currModule, fullname); 817 if (p == null) { 818 Assert.check(!fullname.isEmpty(), () -> "rootPackage missing!; currModule: " + currModule); 819 p = new PackageSymbol( 820 Convert.shortName(fullname), 821 enterPackage(currModule, Convert.packagePart(fullname))); 822 p.completer = initialCompleter; 823 p.modle = currModule; 824 doEnterPackage(currModule, p); 825 } 826 return p; 827 } 828 829 private void doEnterPackage(ModuleSymbol msym, PackageSymbol pack) { 830 packages.computeIfAbsent(pack.fullname, n -> new HashMap<>()).put(msym, pack); 831 msym.enclosedPackages = msym.enclosedPackages.prepend(pack); 832 } 833 834 private void addRootPackageFor(ModuleSymbol module) { 835 doEnterPackage(module, rootPackage); 836 PackageSymbol unnamedPackage = new PackageSymbol(names.empty, rootPackage) { 837 @Override 838 public String toString() { 839 return messages.getLocalizedString("compiler.misc.unnamed.package"); 840 } 841 }; 842 unnamedPackage.modle = module; 843 //we cannot use a method reference below, as initialCompleter might be null now 844 unnamedPackage.completer = s -> initialCompleter.complete(s); 845 unnamedPackage.flags_field |= EXISTS; 846 module.unnamedPackage = unnamedPackage; 847 } 848 849 public PackageSymbol getPackage(ModuleSymbol module, Name fullname) { 850 return packages.getOrDefault(fullname, Collections.emptyMap()).get(module); 851 } 852 853 public ModuleSymbol enterModule(Name name) { 854 ModuleSymbol msym = modules.get(name); 855 if (msym == null) { 856 msym = ModuleSymbol.create(name, names.module_info); 857 addRootPackageFor(msym); 858 msym.completer = s -> moduleCompleter.complete(s); //bootstrap issues 859 modules.put(name, msym); 860 } 861 return msym; 862 } 863 864 public ModuleSymbol getModule(Name name) { 865 return modules.get(name); 866 } 867 868 //temporary: 869 public ModuleSymbol inferModule(Name packageName) { 870 if (packageName.isEmpty()) 871 return java_base == noModule ? noModule : unnamedModule;//! 872 873 ModuleSymbol msym = null; 874 Map<ModuleSymbol,PackageSymbol> map = packages.get(packageName); 875 if (map == null) 876 return null; 877 for (Map.Entry<ModuleSymbol,PackageSymbol> e: map.entrySet()) { 878 if (!e.getValue().members().isEmpty()) { 879 if (msym == null) { 880 msym = e.getKey(); 881 } else { 882 return null; 883 } 884 } 885 } 886 return msym; 887 } 888 889 public List<ModuleSymbol> listPackageModules(Name packageName) { 890 if (packageName.isEmpty()) 891 return List.nil(); 892 893 List<ModuleSymbol> result = List.nil(); 894 Map<ModuleSymbol,PackageSymbol> map = packages.get(packageName); 895 if (map != null) { 896 for (Map.Entry<ModuleSymbol, PackageSymbol> e: map.entrySet()) { 897 if (!e.getValue().members().isEmpty()) { 898 result = result.prepend(e.getKey()); 899 } 900 } 901 } 902 return result; 903 } 904 905 public Collection<ModuleSymbol> getAllModules() { 906 return modules.values(); 907 } 908 909 public Iterable<ClassSymbol> getClassesForName(Name candidate) { 910 return classes.getOrDefault(candidate, Collections.emptyMap()).values(); 911 } 912 913 public Iterable<PackageSymbol> getPackagesForName(Name candidate) { 914 return packages.getOrDefault(candidate, Collections.emptyMap()).values(); 915 } 916 }